ATEC-PANDA 2168, Руководство по обслуживанию

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7. Overview of IC function
7.1 N801 LC8632XXX Function: microprocessor
Symbol PIN Function description Symbol PIN Function description
NC 1 No connected STANDBY 42 STAND BY control output
NC 2 No connected TV/AV 41 TV/AV control output
NC 3 No connected AV1/AV2 40 AV1/AV2/S-VHS control
output
STOP 4 Bus control port MUTE 39 MUTE output
NC 5 No connected SPOT KILLER 38 Blanking as TV turn off
VOLUME 6 PWM output of volume
control
NTSC3.58 37 No connected
NC 7 No connected BAND2 36 No connected
NC 8 No connected BAND1 35 No connected
GND 9 Ground IR-IN 34 Remote signal input
XTAL1 10 32kHz crystal oscillator SD 33 Identification signal input
XTAL2 11 32kHz crystal oscillator SYS IN2 32 No connected
VDD 12 Connected to 5 V
power supply
SYS IN1 31 No connected
KEY1 13 Keyed input 1 NC 30 No connected
KEY2 14 Keyed input 2 NC 29 No connected
AFT 15 AFT voltage input SCL 28 EEPROM SCL
X-RAY 16 X-RAY protection input SDA 27 EEPROM SDA
RESET 17 High level: Reset NC 26 No connected
FILT 18 Filtering OSD BLANK 25 OSD blanking output
CATV 19 CVBS signals input B OUT 24 OSD B output
V.SYN 20 Vertical pulse input G OUT 23 OSD G output
H.SYN 21 Horizontal pulse input R OUT 22 OSD R output
7.1.1 Description of pins of LC8632XXX
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Pin No.1: NC
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Pin No.2: S-VHS selector switch. In case of the S-VHS status, the level is low, in other cases the
level is high.
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Pin No.3: NC
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Pin No.4: CPU bus control port, in normal operating the level is high, when this level is forced
in low level, CPU bus will be opened, general, it is used for automatic adjustment of white balance.
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Pin No.5: NC